Refrigeration – Material cooling means including gas-liquid contactor – Cooling heat rejector of refrigeration producer
Reexamination Certificate
2001-10-26
2004-06-15
Doerrler, William C. (Department: 3744)
Refrigeration
Material cooling means including gas-liquid contactor
Cooling heat rejector of refrigeration producer
C165S911000, C165S115000, C062S277000, C261S156000, C261S157000
Reexamination Certificate
active
06748759
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a heat exchanger for a medium condenser especially relates to a high efficiency heat exchanger in a combination of air cooling and water evaporating cooling system.
BACKGROUND OF THE INVENTION
A conventional heat exchanger of a medium condenser is usually in an air cooling or a water cooling type.
An air cooling heat exchanger, as shown in
FIG. 1
, comprises a plurality of vertical cooling fins, a plurality of medium pipes bored laterally through cooling fins and connected in series to a single medium coil, however the efficiency of this type is not high enough for reducing critical pressure of medium condensing therefor a long medium coil piping should be used for maintaining a high pressure therein.
While a water cooling heat exchanger may obtain a little better cooling efficiency, a large place is needed for a water shower cooling tower and a long piping system, and a large fan system is also needed. Therefore, the cost becomes high. Furthermore, a conventional water cooling system usually uses a plurality of water spray nozzles to spray water continuously onto the cooling fins under a pressure. Therefore an impact and splash will force the water to flow over the cooling fins quickly so that it can not provide an evaporating effect. Water cooling with a large quantity of circulating water requires a large collection pan and a powerful water pump for operating.
SUMMARY OF THE INVENTION
The present invention has been overcomes the aforesaid drawbacks.
A main object of the present invention is to provide a high efficiency heat exchanger having extra length cooling fins to increase air cooling efficiency.
Another main object is to provide a high efficiency heat exchanger by using a drip-drop type water feeding box to obtain a water evaporating effect therefore.
Also another main object is to provide a high efficiency heat exchanger wherein an extreme low temperature is reached in the system due to high cooling efficiency so that a plurality of medium coil sets connected in parallel can be applied to condense cooling medium in each medium coil set under a lower critical pressure.
Still another object is to provide a high efficiency heat exchanger having extra cooling zones to instead a cooling tower of a conventional water cooling system to cooling the circulated water for cost saving.
According to one aspect of the present invention, the high efficiency heat exchanger mainly comprising a plurality of vertical cooling fins having extra length extending both upwardly and downwardly from an ordinary portion of medium coil path for greatly increasing the cooling efficiency. Therefore, a drip-drop type water feeding box for feeding water drops to a top of cooling fins densely but intermittently to hold each water drop in the spacing between opposite surfaces of adjacent cooling fins a short period of time and start to slide down around the surface of a cooling fin as a next drop of water is delivered to provide enough time for evaporating so as to absorb a large quantity of latent heat for increasing cooling efficiency therefore.
REFERENCES:
patent: 2723540 (1955-11-01), Derr
patent: 3169575 (1965-02-01), Engalitcheff et al.
patent: 3313120 (1967-04-01), Kuss et al.
patent: 3691786 (1972-09-01), Anderson et al.
patent: 4196157 (1980-04-01), Schinner
patent: 4672817 (1987-06-01), Croce
patent: 6213200 (2001-04-01), Carter et al.
Doerrler William C.
Troxell Law Office PLLC
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